Introducing the second generation Atlas cranks. Continuing to utilize the same proprietary OPTIM-AL alloy (20% stronger than 7050) these cranks have been updated to utilize our EXI (external ISIS) interface for improved user installation and removal. In the process we have been able to sculpt away between 31 and 81grams depending on configuration from our first generation offering without sacrificing any strength, producing our lightest big hit, freeride cranks ever! 822g (165x36T, w68/73 + BB)